Download - Plants power point
![Page 1: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/1.jpg)
PLANTSName all the plants you can think of…What do these all have in common?
Chapter 9
![Page 2: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/2.jpg)
• Plants are many-celled organisms
- most plants contain chlorophyll
- at least 260,000 plant species have been identified
- plants are adapted to nearly every environment on earth
- plants are important food sources for people and animals
![Page 3: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/3.jpg)
• Photosynthesis - the process by which green
plants use sunlight to make food from carbon dioxide
and water.
- Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
![Page 4: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/4.jpg)
PLANT CELLS:
![Page 5: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/5.jpg)
• Plant cells have:
- a cell membrane- a nucleus and other organelles- a cell wall- chlorophyll – the green pigment used in photosynthesis- a central vacuole which
regulates the water content of the cell
![Page 6: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/6.jpg)
• Some plants also contain carotenoids - Carotenoids are red, yellow or orange pigments that are also used in photosynthesis
![Page 7: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/7.jpg)
• PARTS:
- A cuticle is a waxy protective layer that covers the stems, leaves and flowers of many plants
- The cuticle helps prevent water loss in the plant
![Page 8: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/8.jpg)
• Cellulose is a chemical compound made out of sugar
- cellulose forms tangled fibers in cell walls and provides structure and support
![Page 9: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/9.jpg)
• Plants can be categorized as vascular or nonvascular
• Vascular plants have tubelike structures that carry water and nutrients throughout the plant
![Page 10: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/10.jpg)
• Nonvascular plants do not have the tubelike structures
• Nonvascular plants use other ways to move water and nutrients
![Page 11: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/11.jpg)
• Nonvascular plants have rhizoids instead of roots. • Rhizoids are structures that anchor the plants
where they grow
• Most nonvascular plants are classified as mosses
![Page 12: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/12.jpg)
• Botany is the science of studying plants.
• In the late 1700s, Swedish botanist Carolus Linnaeus developed a system of classifying living things, using many different characteristics
![Page 13: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/13.jpg)
![Page 14: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/14.jpg)
PARTS OF A PLANT
Leaf – the organ of a plant where photosynthesis takes place
![Page 15: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/15.jpg)
• Stem – support the branches, leaves, and reproductive structures
![Page 16: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/16.jpg)
Roots – act as anchors for a growing plant, holding it in place.
- Water and substances enter a plant through its roots.
![Page 17: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/17.jpg)
Flower – the part of certain plants that develop into fruit
- Flowering plants are called agiosperms
![Page 18: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/18.jpg)
• Gymnosperms are vascular plants that produce seeds that are NOT protected by fruit.
• Gymnosperms have no flowers
• These plants include conifers, such as pine trees,fir trees, and spruce – all are commonevergreen trees
![Page 19: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/19.jpg)
• In a seed plant, there are three tissues which make up the vascular system:
- xylem - conducts water and dissolved nutrients upward from the root and also helps to form the stem
- phloem - conducts sugars and other metabolic products downward from the leaves.
- cambium - a thin layer between the xylem and phloem of most vascular plants that gives rise to new cells and is responsible for secondary growth.
![Page 20: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/20.jpg)
![Page 21: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/21.jpg)
![Page 22: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/22.jpg)
• In a seed plant, some spores develop into pollen
• A pollen grain is a small structure produced by the male seed plant
• The transfer of pollen grains to reproduce is called pollination
• Pollen can be transferred by gravity, wind, water, animals or insects
![Page 23: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/23.jpg)
![Page 24: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/24.jpg)
*FLOWERS* - Flowers have four main parts: petals, sepals,
stamen and pistils
![Page 25: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/25.jpg)
• Petals are the colorful parts
• Sepals are the leaflike parts outside the petals. They form the outside of the flower bud
• Stamen is the male reproductive part; pollen is produced in the stamen
• Pistil is the female reproductive organ; the ovary is the base of the pistil where ovules are found–ovules produce eggs, or reproductive cells
![Page 26: Plants power point](https://reader036.vdocuments.net/reader036/viewer/2022062616/54972e30b4795927538b45f0/html5/thumbnails/26.jpg)